The business accounted for 45 percent of Ballard’s total revenue in the quarter.

Ballard, whose customers include BAE Systems, Toyota Motor Corp and Van Hool, has been expanding client base for its high-margin backup power unit for the auto industry.

The company has delivered orders of fuel cell buses to clients, including bus maker New Flyer Industries, zero-emission transit operator SunLine Transit Agency and clean transportation provider Calstart, in the last two months.

Ballard has also been expanding its client base by signing deals to deliver telecom backup power systems in China and the Philippines, and for material handling systems to be deployed in Europe.

Analysts on average had expected a loss of 2 cents per share on revenue of $17.2 million, according to Thomson Reuters I/B/E/S.

The company expects revenue growth for the year of about 30 percent.

Ballard shares closed at C$4.65 on the Toronto Stock Exchange on Tuesday.

Ballard’s U.S.-listed shares, which have risen more than 18 percent in the past three months, closed at $4.32 on the Nasdaq on Tuesday. (Reporting by Shubhankar Chakravorty and Narottam Medhora in Bangalore; Editing by Lisa Shumaker and Eric Walsh)